VOIP over MPLS Latency Issue

I am trying to determine if the output of my traceroutes signal a problem with my service providers MPLS delivery. We have been having call quality issues and I am wondering if this might be the culprit.

Here are 3 seperate outputs from the same 3825 over the MPLS to another 3825, commands run with about 60 seconds between them:

Your tracert looks good. 48 msec is a fair delay.
You can use the IOS built in IP SLA feature to measure RTP delay/jitter/packet loss with real RTP packets.http://www.networkworld.com/community/node/30924http://docwiki.cisco.com/wiki/IOS_IP_SLAs_UDP_Jitter_Operation_Technical_Analysis
Call quality issues are quite difficult to troubleshoot. You may want to check how much bandwidth is allocated for realtime voice (DSCP EF) by your service provider. Also check your CAC (call admission control) settings to make sure you're not oversubscribing your priority queue. On your WAN links, check the output of "show policy-map interface ..." to make sure you are classifying and queueing your voice traffic properly and you're not dropping packets at the interface.

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